Removing accessory crankshaft pulley

I have the DOHC S engine (I think Mitsubishi engine). A couple of weeks ago while driving on the highway I noticed that the air conditioner was blowing warm air (it was 88 degrees outside.) Then I noticed that the engine temperature gauge was on hot. So I turned the air conditioner off and turned the heater on to try to cool it down. But the air coming out of the vents was not even warm. I pulled it over and had to get a tow.

I removed the water pump (not an easy job) and it was destroyed (the impeller inside.) I got another one and changed it, tried to start the car, but no dice. I then pulled a spark plug and using a flashlight I saw antifreeze on top of the piston. I am now in the process of removing the heads with the engine in the car. I am now trying to remove the accessory crankshaft pulley and cannot get it loose. I tried using a 24mm open end wrench on the inside bolt (would not budge), then put a 34 mm impact socket on the huge nut on the front of the pulley and used my impact wrench to no avail. According to the manual the pulley has left-handed threads so I have been of course been turning it clockwise to try to loosen it. I thought about maybe heating the crankshaft dampener that attaches to the crankshaft but am afraid of burning up any rubber on it. I would sure appreciate any suggestions.

Thank you.